Dynamic Evaluation Method of the EW-AHP Attribute Identification Model for the Tunnel Gushing Water Disaster under Interval Conditions and Applications

Table 3

The index grading standards.

Evaluation index	R1	R2	R3	R4
I1	35 ∼ 60	60 ∼ 70	70 ∼ 85	85 ∼ 100
I2 (m)	h < 10	10 ≤ h < 30	30 ≤ h < 60	h > 60
I3 (m)	<50	50 ∼ 100	100 ∼ 200	200 ∼ 300
I4 (10^−5 cm/s)	<1	1 ∼ 1000	1000 ∼ 100000	>100000
I5 (m^3/d)	<100	100 ∼ 500	500 ∼ 1000	>1000
I6 (%)	<20	20 ∼ 40	40 ∼ 60	>60
I7 (°)	0 ∼ 10	10 ∼ 25	25 ∼ 45	45 ∼ 65
I8	35 ∼ 60	60 ∼ 70	70 ∼ 85	85 ∼ 100
I9	35 ∼ 60	60 ∼ 70	70 ∼ 85	85 ∼ 100
I10 (m)	<50	50 ∼ 100	100 ∼ 200	>200